Question

200 ml of water is added to 500 ml of 0.2m solution . what is the molarity of this diluted solution

Answer 1

Answer : The molarity of diluted solution is 0.1428 mole/L.

Solution : Given,

Initial volume = 500 ml

Final volume = 500 + 200 = 700 ml

Initial molarity = 0.2 mole/L

Formula used :

$M_1V_1=M_2V_2$

where,

$M_1$ = initial molarity

$M_2$ = final molarity

$V_1$ = initial volume

$V_2$ = final volume

Now put all the given values in this formula, we get the molarity of diluted solution.

$0.2mole/L\times 500ml=M_2\times 700ml$

$M_2=0.1428mole/L$

Therefore, the molarity of diluted solution is 0.1428 mole/L.

Answer 2

0.1428 M

Refer to the attachment